| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a means by which unknown communication counterparts can safely exchange mails to build up friendship by preventing a danger that one party inadvertently makes communication with an improper counterpart as one of disadvantages of an electronic mail system. SOLUTION: A specific address converting server is placed in a network, an impartial agent manages the server, converts a real address into a tentative address to mediate mails so as to make unknown communication parties conduct mail exchange without leaking the real name and the address to the opposite party. Furthermore, the network mail system has a means that protects a database to convert the addresses from an illegal attack and a means that prevents the cross-reference between names and addresses or the like from being leaked by external check of the cross-reference of mails given/outputted to/from the server. Furthermore, the network mail system conducts services of disclosing the information of an opposite party on the basis of consents between communication parties.</p> |
